Boiler



R. D. REED.

BOILER.

Patented Mar. 23, 1920.

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Richardll Reed:

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R. D. REED.

v BOILER. APPLICATION FILED FEB. 24, 1915.

1,334,676. Patented Mar. 23, 1920.

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ATTORNEY.

UNITED srxrns PATENT oFFroE.

RICHARD D. REED, OF WESTFIELD, MASSACHUSETTS, ASSIGNOR TO THE H. B. SMITH COMPANY, OF WESTFIELD, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

BOILER.

Specification of Letters Patent. Patented Blair. 23, 1920.

Applicationfiled February 24, 1915. Serial No. 10,197.

3 To all whom, it may concern:

Be it known that I, RICHARD D. REED, a citizen of the United States, and a resident of lVestfield, county of Hampden, State of Massachusetts, have invented certain new and useful Improvements in Boilers, of which the following is a specification.

This invention relates particularly to seetional boilers, and is designed to provide means to permit the burning of soft coal and effect complete combustion in order to eliminate the issuance of smoke.

In the drawings- Figure l is a central longitudinal section of a boiler embodying my invention.

Fig. 2 is a front view, with the front portion of the boiler removed.

Fig. 3 is a horizontal section on the line as of Fig. 2.

In carrying out my invention I provide in conjunction with a sectional boiler, a chamber for mixing and igniting the gases and volatile matter, and a second chamber within which the combustion may be completed. These chambers are built into and as a part of a sectional cast iron boiler, and are formed by water sections and separated by water-carrying partition walls so that the heat of the burning matter may be utilized for the performance of useful work. Each partition wall has an elongated flue through it, and these fines are angularly disposed relatively to one another, thus causing the gases and volatile matter to change the direction of travel during passage from the fire box to the stack, insuring that the hot gases will be mixed and brought into contact with the volatile matter and ignited. The sections which form the walls of the mixing and combustion chambers are similarto the sections forming the fire box of the boiler, and they may be assembled together in the same way. In some cases it may be convenient to make the flue sections or partition walls so that their position may be interchangeable with the other sections, in order to vary the size of either of the chambers to meet existing conditions.

Another feature of construction is to be found in the division plate located in the ash pit and dividing the grate into separate draft areas, which permits of coking a charge of coal on one side of the grate while the other side is burning bright.

quirement.

I11 the drawings, 0. denotes the grate divided longitudinally by the partition Z), and each part provided with the usual draft doors or openings controlled by shutters. 0 denotes the fire box section, built up from anyfdesirednumber of water sections d. e is a flue section or partition wall, which forms the rear wall of the fire box section and is provided with a longitudinal flue 5. 10 denotes the mixing chamber located directly back of the fire box and connected therewith by the flue 5. It is built up of any desired number of water sections 03', similar to those forming the fire box. As shown, there is one of these sections, and then comes the second flue section or partition wall, 15, forming the end of the mixing chamber and having a vertical flue 20. Back of this second flue section is the combustion chamber 25, formed by the desired or proper number of water sections (Z three of such sections and a back section (5 being shown.

The complete boiler thus comprises two end compartments and an intermediate compartment, connected by the fines 5, 20, which are angularly disposed with relation to one another. And it is this angular arrangement of the fines which causes the gases to whirl in the intermediate chamber and thus become thoroughly mixed and ignited, with the result that they are completely burned up in the combustion chamber.

By forming the boiler sectionally, any size of fire box, mixing chamber, or combustion chamber, can be provided to meet any re- By this arrangement a twofold advantage is secured, namely, the consumption of the smoke, and the increased capacity of the boiler. For convenience of reference, the water sections making up the fire box; proper of the boiler may be considered as the main series of sections, and those sections making up the mixing and combustion chambers may be considered as the secondary series of sections.

I claim as my invention:

1. In a combined boiler and furnace the combination with a series of abutting hollow water sections, of a fire box, a combustion chamber and a mixing chamber between said fire box and combustion chamber, a wall forming a partition between said fire box and mixing chamber and provided with a horizontally extending comparatively narrow flue opening, and a second wall forming a partition between said mixing chamber and combustion chamber and provided with a vertically extending comparatively narrow flue opening, said water sections being of such size and so constructed as to be inter changeable to thereby vary the relative sizes of the) mixing chamber and the com- .bustion chamber to adapt them to burning dilferent qualities of soft coal, both of said partitions being hollow water carrying walls formed integral with said sections.

2. In a combined-boiler and furnace the combination with a series'of abutting hollow water sections, of a fire box, a combustion chamber and a mixing chamber between said fire box and combustion chamber, a wall forming a partition between said fire box and mixing chamber and provided with a horizontally extending comparatively narrow flue opening, and a second wallforming a partition between said mixing chamber and combustion chamber and provided with a vertically extending comparatively narrow flue opening, said water sections being of such size and so constructed as to be interchangeable to thereby vary the relative sizes of the mixing chamber and the combustion chamber to adapte them to burning different qualities of soft coal, one of said partitions being a hollow water carrying wall formed integral with one of said sections.

RICHARD D. REED. Vitnesses CHARLES G. SMITH, G120. E. SHEPARD, Jr. 

